| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.net.shared; |
| |
| import static android.net.shared.Inet4AddressUtils.getBroadcastAddress; |
| import static android.net.shared.Inet4AddressUtils.getImplicitNetmask; |
| import static android.net.shared.Inet4AddressUtils.getPrefixMaskAsInet4Address; |
| import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTH; |
| import static android.net.shared.Inet4AddressUtils.inet4AddressToIntHTL; |
| import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTH; |
| import static android.net.shared.Inet4AddressUtils.intToInet4AddressHTL; |
| import static android.net.shared.Inet4AddressUtils.netmaskToPrefixLength; |
| import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTH; |
| import static android.net.shared.Inet4AddressUtils.prefixLengthToV4NetmaskIntHTL; |
| |
| import static junit.framework.Assert.assertEquals; |
| |
| import static org.junit.Assert.fail; |
| |
| import android.net.InetAddresses; |
| import android.support.test.filters.SmallTest; |
| import android.support.test.runner.AndroidJUnit4; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.net.Inet4Address; |
| |
| @RunWith(AndroidJUnit4.class) |
| @SmallTest |
| public class Inet4AddressUtilsTest { |
| |
| @Test |
| public void testInet4AddressToIntHTL() { |
| assertEquals(0, inet4AddressToIntHTL(ipv4Address("0.0.0.0"))); |
| assertEquals(0x000080ff, inet4AddressToIntHTL(ipv4Address("255.128.0.0"))); |
| assertEquals(0x0080ff0a, inet4AddressToIntHTL(ipv4Address("10.255.128.0"))); |
| assertEquals(0x00feff0a, inet4AddressToIntHTL(ipv4Address("10.255.254.0"))); |
| assertEquals(0xfeffa8c0, inet4AddressToIntHTL(ipv4Address("192.168.255.254"))); |
| assertEquals(0xffffa8c0, inet4AddressToIntHTL(ipv4Address("192.168.255.255"))); |
| } |
| |
| @Test |
| public void testIntToInet4AddressHTL() { |
| assertEquals(ipv4Address("0.0.0.0"), intToInet4AddressHTL(0)); |
| assertEquals(ipv4Address("255.128.0.0"), intToInet4AddressHTL(0x000080ff)); |
| assertEquals(ipv4Address("10.255.128.0"), intToInet4AddressHTL(0x0080ff0a)); |
| assertEquals(ipv4Address("10.255.254.0"), intToInet4AddressHTL(0x00feff0a)); |
| assertEquals(ipv4Address("192.168.255.254"), intToInet4AddressHTL(0xfeffa8c0)); |
| assertEquals(ipv4Address("192.168.255.255"), intToInet4AddressHTL(0xffffa8c0)); |
| } |
| |
| @Test |
| public void testInet4AddressToIntHTH() { |
| assertEquals(0, inet4AddressToIntHTH(ipv4Address("0.0.0.0"))); |
| assertEquals(0xff800000, inet4AddressToIntHTH(ipv4Address("255.128.0.0"))); |
| assertEquals(0x0aff8000, inet4AddressToIntHTH(ipv4Address("10.255.128.0"))); |
| assertEquals(0x0afffe00, inet4AddressToIntHTH(ipv4Address("10.255.254.0"))); |
| assertEquals(0xc0a8fffe, inet4AddressToIntHTH(ipv4Address("192.168.255.254"))); |
| assertEquals(0xc0a8ffff, inet4AddressToIntHTH(ipv4Address("192.168.255.255"))); |
| } |
| |
| @Test |
| public void testIntToInet4AddressHTH() { |
| assertEquals(ipv4Address("0.0.0.0"), intToInet4AddressHTH(0)); |
| assertEquals(ipv4Address("255.128.0.0"), intToInet4AddressHTH(0xff800000)); |
| assertEquals(ipv4Address("10.255.128.0"), intToInet4AddressHTH(0x0aff8000)); |
| assertEquals(ipv4Address("10.255.254.0"), intToInet4AddressHTH(0x0afffe00)); |
| assertEquals(ipv4Address("192.168.255.254"), intToInet4AddressHTH(0xc0a8fffe)); |
| assertEquals(ipv4Address("192.168.255.255"), intToInet4AddressHTH(0xc0a8ffff)); |
| } |
| |
| |
| @Test |
| public void testPrefixLengthToV4NetmaskIntHTL() { |
| assertEquals(0, prefixLengthToV4NetmaskIntHTL(0)); |
| assertEquals(0x000080ff /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTL(9)); |
| assertEquals(0x0080ffff /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTL(17)); |
| assertEquals(0x00feffff /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTL(23)); |
| assertEquals(0xfeffffff /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTL(31)); |
| assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTL(32)); |
| } |
| |
| @Test |
| public void testPrefixLengthToV4NetmaskIntHTH() { |
| assertEquals(0, prefixLengthToV4NetmaskIntHTH(0)); |
| assertEquals(0xff800000 /* 255.128.0.0 */, prefixLengthToV4NetmaskIntHTH(9)); |
| assertEquals(0xffff8000 /* 255.255.128.0 */, prefixLengthToV4NetmaskIntHTH(17)); |
| assertEquals(0xfffffe00 /* 255.255.254.0 */, prefixLengthToV4NetmaskIntHTH(23)); |
| assertEquals(0xfffffffe /* 255.255.255.254 */, prefixLengthToV4NetmaskIntHTH(31)); |
| assertEquals(0xffffffff /* 255.255.255.255 */, prefixLengthToV4NetmaskIntHTH(32)); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testPrefixLengthToV4NetmaskIntHTH_NegativeLength() { |
| prefixLengthToV4NetmaskIntHTH(-1); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testPrefixLengthToV4NetmaskIntHTH_LengthTooLarge() { |
| prefixLengthToV4NetmaskIntHTH(33); |
| } |
| |
| private void checkAddressMasking(String expectedAddr, String addr, int prefixLength) { |
| final int prefix = prefixLengthToV4NetmaskIntHTH(prefixLength); |
| final int addrInt = inet4AddressToIntHTH(ipv4Address(addr)); |
| assertEquals(ipv4Address(expectedAddr), intToInet4AddressHTH(prefix & addrInt)); |
| } |
| |
| @Test |
| public void testPrefixLengthToV4NetmaskIntHTH_MaskAddr() { |
| checkAddressMasking("192.168.0.0", "192.168.128.1", 16); |
| checkAddressMasking("255.240.0.0", "255.255.255.255", 12); |
| checkAddressMasking("255.255.255.255", "255.255.255.255", 32); |
| checkAddressMasking("0.0.0.0", "255.255.255.255", 0); |
| } |
| |
| @Test |
| public void testGetImplicitNetmask() { |
| assertEquals(8, getImplicitNetmask(ipv4Address("4.2.2.2"))); |
| assertEquals(8, getImplicitNetmask(ipv4Address("10.5.6.7"))); |
| assertEquals(16, getImplicitNetmask(ipv4Address("173.194.72.105"))); |
| assertEquals(16, getImplicitNetmask(ipv4Address("172.23.68.145"))); |
| assertEquals(24, getImplicitNetmask(ipv4Address("192.0.2.1"))); |
| assertEquals(24, getImplicitNetmask(ipv4Address("192.168.5.1"))); |
| assertEquals(32, getImplicitNetmask(ipv4Address("224.0.0.1"))); |
| assertEquals(32, getImplicitNetmask(ipv4Address("255.6.7.8"))); |
| } |
| |
| private void assertInvalidNetworkMask(Inet4Address addr) { |
| try { |
| netmaskToPrefixLength(addr); |
| fail("Invalid netmask " + addr.getHostAddress() + " did not cause exception"); |
| } catch (IllegalArgumentException expected) { |
| } |
| } |
| |
| @Test |
| public void testNetmaskToPrefixLength() { |
| assertEquals(0, netmaskToPrefixLength(ipv4Address("0.0.0.0"))); |
| assertEquals(9, netmaskToPrefixLength(ipv4Address("255.128.0.0"))); |
| assertEquals(17, netmaskToPrefixLength(ipv4Address("255.255.128.0"))); |
| assertEquals(23, netmaskToPrefixLength(ipv4Address("255.255.254.0"))); |
| assertEquals(31, netmaskToPrefixLength(ipv4Address("255.255.255.254"))); |
| assertEquals(32, netmaskToPrefixLength(ipv4Address("255.255.255.255"))); |
| |
| assertInvalidNetworkMask(ipv4Address("0.0.0.1")); |
| assertInvalidNetworkMask(ipv4Address("255.255.255.253")); |
| assertInvalidNetworkMask(ipv4Address("255.255.0.255")); |
| } |
| |
| @Test |
| public void testGetPrefixMaskAsAddress() { |
| assertEquals("255.255.240.0", getPrefixMaskAsInet4Address(20).getHostAddress()); |
| assertEquals("255.0.0.0", getPrefixMaskAsInet4Address(8).getHostAddress()); |
| assertEquals("0.0.0.0", getPrefixMaskAsInet4Address(0).getHostAddress()); |
| assertEquals("255.255.255.255", getPrefixMaskAsInet4Address(32).getHostAddress()); |
| } |
| |
| @Test |
| public void testGetBroadcastAddress() { |
| assertEquals("192.168.15.255", |
| getBroadcastAddress(ipv4Address("192.168.0.123"), 20).getHostAddress()); |
| assertEquals("192.255.255.255", |
| getBroadcastAddress(ipv4Address("192.168.0.123"), 8).getHostAddress()); |
| assertEquals("192.168.0.123", |
| getBroadcastAddress(ipv4Address("192.168.0.123"), 32).getHostAddress()); |
| assertEquals("255.255.255.255", |
| getBroadcastAddress(ipv4Address("192.168.0.123"), 0).getHostAddress()); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testGetBroadcastAddress_PrefixTooLarge() { |
| getBroadcastAddress(ipv4Address("192.168.0.123"), 33); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testGetBroadcastAddress_NegativePrefix() { |
| getBroadcastAddress(ipv4Address("192.168.0.123"), -1); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testGetPrefixMaskAsAddress_PrefixTooLarge() { |
| getPrefixMaskAsInet4Address(33); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testGetPrefixMaskAsAddress_NegativePrefix() { |
| getPrefixMaskAsInet4Address(-1); |
| } |
| |
| private Inet4Address ipv4Address(String addr) { |
| return (Inet4Address) InetAddresses.parseNumericAddress(addr); |
| } |
| } |